MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF document is identified as malicious due to its extensive use of external links, many of which point to a link farm designed for SEO poisoning. One critical heuristic indicates a direct link to known malicious redirector infrastructure at https://ttraff.ru/wb?keyword=home%20inspection%20report%20pdf. The document body, though heavily obfuscated, contains keywords related to 'home inspection report pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise the malicious link distribution.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://ttraff.ru/wb?keyword=home%20inspection%20report%20pdf
- http://files.coachandersonsclassroom.com/uploads/1/3/0/9/130968956/3733001.pdf
- http://files.theflourishsisterhood.com/uploads/1/3/1/3/131398156/95d18288fa830.pdf
- http://files.breadsnbakes.com/uploads/1/3/2/6/132695574/7046121.pdf
- http://files.mpmbowlny.com/uploads/1/3/0/8/130874110/6081140.pdf
- http://files.innovationsbuildingservices.com/uploads/1/3/1/4/131438741/3ca2f8128cf.pdf
- http://files.jancancan.com/uploads/1/3/1/4/131406413/sosazidisajawaj-ledosol-vaxodavuv-ziwobedomanefon.pdf
- http://files.emeraldisletour.com/uploads/1/3/2/7/132740525/757c7c41725e84d.pdf
- http://files.electaylin.com/uploads/1/3/2/7/132740320/8322645.pdf
- https://fobitogoxonu.files.wordpress.com/2020/06/97290168932.pdf
- https://naganaf.files.wordpress.com/2020/07/xadakejukakavaraxada.pdf
- https://vomaxepe.files.wordpress.com/2020/06/32901681266.pdf
- https://jifarilu.files.wordpress.com/2020/06/54353194089.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005871.binfc358623c265aca285f35742e2d5e125249ea3ad131921308d1c453512d95209 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5871 | 4808 bytes |
font_01_sfnt_off000068a4.bin3c0a29fc10d2a5cf26e242df0ec9489daa3b1cfb91dac00b1b75a03cbedf8ae2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x68A4 | 9980 bytes |
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